Malicious PDF — malware analysis report

Static analysis result for SHA-256 d58c581ac0a00514…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 19:37:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 77d9b3ac0605a6738550a1cb0af69c41 SHA-1: 0b553e2e1811a97b884988b1634c8cdf06aa9246 SHA-256: d58c581ac0a00514161ec3bb62cc26723160bc59eb5ef59d4fd46165f6d45160
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators to entice users into clicking malicious links. The document contains multiple embedded URLs, including one identified as a known malicious redirector, which likely leads to further malicious content or malware downloads. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/479516143/minecraft-dungeons-free-download-pc-game-hack In PDF document text
    • http://digilib.unbari.ac.id/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-free-vip-for-all-places_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/simplysarc_GM479516143.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/hack-piano-roblox-got-talent_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-hack-into-anyones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-hacks-2021-epic-minigames_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-admin-hack-client_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-roblox-gift-cards-nov-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3439 21416 bytes
SHA-256: 951bfa6d6f290940f0a9dbfc3c2ea906718394522fe04b2bc5df9e46a6b0f40e
font_01_sfnt_off000062cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CD 18872 bytes
SHA-256: 05183faf73e067548e32258fc58809d25a8fef905510eff8eab59b37bb03aee7

Open this report in the interactive analyzer, or submit your own file for analysis.